Hello after downloading and using netcut I came across an issue, I banned some users from my internet and I accidentally banned my TV, and after a day I realized that that was my TV. So after I unbanned it, suddenly it disappeared and it cant acces wifi. Please help!!!

you just need to give your TV some time to reconnect back to WIFI, some device automatically does that. like most phone and laptop. if your TV decided to not use the WIFI, you might need to reconnect your TV to AP router.